CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 14,735	$ 8,762
Depreciation and amortization	889	933
Deferred income taxes	3,420	1,950
Equity in earnings of Kronos Worldwide, Inc.	(21,479)	(11,175)
Dividends received from Kronos Worldwide, Inc.	5,987	5,283
Cash funding of benefit plans in excess of net benefit plan expense	(120)	(26)
Other, net	1,637	16
Change in assets and liabilities:
Accounts and other receivables, net	(2,226)	(2,614)
Inventories, net	(980)	(381)
Prepaid expenses and other	(819)	(58)
Accounts payable and accrued liabilities	(2,867)	(3,371)
Income taxes	16	7
Accounts with affiliates	(132)	27
Accrued environmental remediation and related costs	3,848	2,605
Other noncurrent assets and liabilities, net	(66)	(2)
Net cash provided by operating activities	1,843	1,956
Cash flows from investing activities:
Capital expenditures	(644)	(621)
Promissory notes receivable from affiliate:
Loans	(12,400)	(14,100)
Collections	12,600	12,500
Other, net	224	2
Net cash used in investing activities	(220)	(2,219)
Cash flows from financing activities -
Distributions to noncontrolling interests in subsidiary	(83)	(83)
Cash and cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	1,540	(346)
Balance at beginning of period	102,941	98,242
Balance at end of period	104,481	97,896
Supplemental disclosure - cash paid for:
Interest	8	7
Income taxes, net	$ 25	$ 210